Never used this fuel before and dont know the oil content. Label only says "Omega 10%" and "Competition Fuels." Got three gallons given to me and just noticed the label. Don't know if is castor or synthetic or how much of either. Any one using this 10% nitro fuel can tell me?

Did you try looking at Morgan Fuel's Website for the info you seek?
http://www.morganfuel.com/omega.htm

Thanks, homebrewer. Did not know about this site. That answers the question.
George

That Morgan fuels site is interesting. Other than the Jet 7% blend all the others are a bit low in oil content for my liking. And I'd have thought that with their experience they should have known that the FAI blend is far from being FAI fuel!